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2 years ago

PLEASEE HELLP ME E ANSWER ALL QUESTIONS OF C AND D ASAPPP 50 POINTS PLEASEEEE

Mathematics

2 answers:

aleksandr82 [10.1K]2 years ago

7 0

Answer is

i: 1/9

ii: 1/9

i: D

ii: E

iii: D

hope this helps :)

Naddik [55]2 years ago

3 0

Answer:

c is certain

and D is ii

Step-by-step explanation:

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3 years ago

What is the equation for the line that passes through coordinates: (2,7

Agata [3.3K]

Answer:

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3 years ago

Plz help me with this

AnnZ [28]

Answer: $\bold{A)\quad y=5sin\bigg(\dfrac{6}{5}x-\pi\bigg)-4}$

<u>Step-by-step explanation:</u>

The general form of a sin/cos function is: y = A sin/cos (Bx-C) + D where the period (P) = 2π ÷ B

In the given function, $B=\dfrac{6}{5}$ → $P=2\pi \cdot \dfrac{5}{6}=\dfrac{10\pi}{3}$

Half of that period is: $\dfrac{1}{2}\cdot \dfrac{10\pi}{3}=\large\boxed{\dfrac{5\pi}{3}}$

Calculate the period for each of the options to find a match:

$A)\quad B=\dfrac{6}{5}:\quad 2\pi \div \dfrac{6}{5}=2\pi \cdot \dfrac{5}{6}=\dfrac{5\pi}{3}\quad \leftarrow\text{THIS WORKS!}\\\\\\B)\quad B=\dfrac{6}{10}:\quad 2\pi \div \dfrac{6}{10}=2\pi \cdot \dfrac{10}{6}=\dfrac{10\pi}{3}\\\\\\C)\quad B=\dfrac{5}{6}:\quad 2\pi \div \dfrac{5}{6}=2\pi \cdot \dfrac{6}{5}=\dfrac{12\pi}{5}\\\\\\D)\quad B=\dfrac{3}{10}:\quad 2\pi \div \dfrac{3}{10}=2\pi \cdot \dfrac{10}{3}=\dfrac{20\pi}{3}$

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3 years ago

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DaniilM [7]

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Move terms

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I skipped some steps because it would be too long :/

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20x>8(4x - 5) -20

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Move variable to the left

20x>32x-60

Collect like terms

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Divide both sides by -12

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8 0

3 years ago